OBERWEIS ASSET MANAGEMENT INC/ Q2 2023 Filing

Filed August 14, 2023

Portfolio Value

$822.8M

Holdings

187

Report Date

Q2 2023

Filing Type

13F-HR

All Holdings (187 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	2,799,271	$48.0M	5.83%
2	ACLSAxcelis Technologies	240,399	$44.0M	5.35%
3	AEHRAehr Test Systems	873,108	$36.0M	4.38%
4	ATECAlphatec Hldgs Inc.	980,470	$17.0M	2.07%
5	PIImpinj, Inc.	179,145	$16.0M	1.94%
6	LNTHLantheus Hldgs Inc.	166,180	$13.0M	1.58%
7	PERIPerion Network, Ltd.	426,250	$13.0M	1.58%
8	VCYTVeracyte, Inc.	482,310	$12.0M	1.46%
9	CROXCrocs, Inc.	105,500	$11.0M	1.34%
10	TMDXTransMedics Group, Inc.	127,000	$10.0M	1.22%
11	ICFIICF International, Inc.	80,200	$9.0M	1.09%
12	VRTVEURVeritiv Corp.	72,790	$9.0M	1.09%
13	BDCBelden, Inc.	98,755	$9.0M	1.09%
14	ALGMAllegro MicroSystems, Inc.	196,040	$8.0M	0.97%
15	EXTRExtreme Networks, Inc.	337,900	$8.0M	0.97%
16	AMPHAmphastar Pharmaceuticals, Inc	147,800	$8.0M	0.97%
17	TCMDTactile Sys Technology, Inc.	294,950	$7.0M	0.85%
18	CLHClean Harbors, Inc.	45,105	$7.0M	0.85%
19	BLBDBlue Bird Corporation	301,300	$6.0M	0.73%
20	MODNEURModel N, Inc.	194,818	$6.0M	0.73%
21	PWIPower Integrations	69,270	$6.0M	0.73%
22	ADMAADMA Biologics, Inc.	1,668,700	$6.0M	0.73%
23	MMSIMerit Medical System Inc	78,160	$6.0M	0.73%
24	VCVisteon Corp.	47,760	$6.0M	0.73%
25	AXNX*Axonics, Inc.	125,440	$6.0M	0.73%
26	VRTVertiv Holdings Co.	248,340	$6.0M	0.73%
27	UCTTUltra Clean Holdings	170,900	$6.0M	0.73%
28	EVHEvolent Health, Inc.	227,910	$6.0M	0.73%
29	BELFBBel Fuse, Inc.	121,500	$6.0M	0.73%
30	OSPNOneSpan, Inc.	416,845	$6.0M	0.73%
31	NVTSNavitas Semiconductor Corp.	640,000	$6.0M	0.73%
32	TMCITreace Medical Concepts, Inc.	251,500	$6.0M	0.73%
33	CHEFThe Chefs Warehouse, Inc.	141,500	$5.0M	0.61%
34	CECOCECO Environmental Corp.	392,600	$5.0M	0.61%
35	CAMTCamtek, Ltd.	148,202	$5.0M	0.61%
36	PLYAPlaya Hotels & Resorts N.V.	655,300	$5.0M	0.61%
37	PLABPhotronics, Inc.	194,700	$5.0M	0.61%
38	CIENCiena Corporation	118,305	$5.0M	0.61%
39	CIR2USDCIRCOR International, Inc.	95,000	$5.0M	0.61%
40	INMDInmode Ltd.	137,100	$5.0M	0.61%
41	EHCEncompass Health Corporation	78,100	$5.0M	0.61%
42	SIBNSI-BONE, Inc.	220,200	$5.0M	0.61%
43	PRKSSeaWorld Entertainment Inc.	99,600	$5.0M	0.61%
44	WFRDWeatherford International PLC	78,580	$5.0M	0.61%
45	STRLSterling Construction Co., Inc	106,700	$5.0M	0.61%
46	VECOVeeco Instruments, Inc.	202,500	$5.0M	0.61%
47	MGPIMGP Ingredients, Inc.	44,850	$4.0M	0.49%
48	DGIIDigi International I	120,600	$4.0M	0.49%
49	HLITHarmonic, Inc.	294,300	$4.0M	0.49%
50	EZPWEZCorp, Inc.	506,200	$4.0M	0.49%
51	HXLHexcel Corporation	59,000	$4.0M	0.49%
52	IPARInter Parfums	30,400	$4.0M	0.49%
53	GVAGranite Construction	110,100	$4.0M	0.49%
54	RESRPC, Inc.	657,033	$4.0M	0.49%
55	FSSFederal Signal Corp.	73,900	$4.0M	0.49%
56	FELEFranklin Electric	40,900	$4.0M	0.49%
57	SPUSDSP Plus Corporation	113,700	$4.0M	0.49%
58	SLABSilicon Laboratories, Inc.	25,510	$4.0M	0.49%
59	WWDWoodward, Inc.	37,100	$4.0M	0.49%
60	MGNIMagnite, Inc.	340,700	$4.0M	0.49%
61	CDNSCadence Design System, Inc.	17,600	$4.0M	0.49%
62	MMSMaximus, Inc.	47,800	$4.0M	0.49%
63	CBTCabot Corp.	62,405	$4.0M	0.49%
64	VVXV2X, Inc.	97,800	$4.0M	0.49%
65	ATDATI, Inc.	106,800	$4.0M	0.49%
66	ALSNAllison Transmission Holdings,	77,400	$4.0M	0.49%
67	HAEHaemonetics Corp.	47,500	$4.0M	0.49%
68	FMFFormfactor Inc.	143,000	$4.0M	0.49%
69	PSNParsons Corp.	90,400	$4.0M	0.49%
70	FLSFlowserve Corporation	119,200	$4.0M	0.49%
71	KWRQuaker Chemical Corporation	20,800	$4.0M	0.49%
72	ZETAZeta Global Holdings Corp.	474,500	$4.0M	0.49%
73	SNCYSun Country Airlines Holdings,	213,200	$4.0M	0.49%
74	ACHCAcadia Healthcare Co., Inc.	51,400	$4.0M	0.49%
75	WEAVWeave Communications, Inc.	394,500	$4.0M	0.49%
76	LFUSLittelfuse, Inc.	15,200	$4.0M	0.49%
77	—Applied Industrial	24,400	$3.0M	0.36%
78	ALGTAllegiant Travel Co.	30,400	$3.0M	0.36%
79	SHLSShoals Technology Group, Inc.	139,600	$3.0M	0.36%
80	FCFSFirstCash Holdings, Inc	40,100	$3.0M	0.36%
81	FTDRFrontdoor, Inc.	117,700	$3.0M	0.36%
82	ESTEEUREarthstone Energy Inc.	223,000	$3.0M	0.36%
83	BOOTBoot Barn Hldgs, Inc.	37,800	$3.0M	0.36%
84	MTSIMacom Technology Solutions	55,700	$3.0M	0.36%
85	NEONeoGenomics, Inc.	213,000	$3.0M	0.36%
86	JELDJELD-WEN Holding, Inc.	201,900	$3.0M	0.36%
87	ALITAlight, Inc.	361,300	$3.0M	0.36%
88	HEESEURH&E Equipment Services, Inc.	82,100	$3.0M	0.36%
89	LYTSLSI Industries Inc.	283,700	$3.0M	0.36%
90	PFBCPreferred Bank	57,000	$3.0M	0.36%
91	AVNWAviat Networks, Inc.	109,507	$3.0M	0.36%
92	HAYNUSDHaynes Intl, Inc.	72,600	$3.0M	0.36%
93	MODModine Mfg Co Com	115,000	$3.0M	0.36%
94	ACMRACM Research, Inc. Class A	285,600	$3.0M	0.36%
95	SMCIUSDSuper Micro Computer Inc.	13,100	$3.0M	0.36%
96	OPCHOption Care Health Inc.	111,000	$3.0M	0.36%
97	AORTArtivion, Inc	211,300	$3.0M	0.36%
98	ATENA10 Networks, Inc.	208,600	$3.0M	0.36%
99	EIGEmployers Holdings, Inc.	95,100	$3.0M	0.36%
100	SOYSunOpta, Inc.	537,700	$3.0M	0.36%

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